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Sorbi C, Tait A, Battisti UM, Brasili L. Spiroxatrine derivatives towards 5-HT 1A receptor selectivity. Pharmacol Rep 2020; 72:427-434. [PMID: 32002826 DOI: 10.1007/s43440-019-00039-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/04/2019] [Accepted: 11/22/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND In our previous work, spiroxatrine was taken as reference compound to develop selective NOP ligands. Therefore, several triazaspirodecanone derivatives were synthesized. Here, we verify their selectivity towards other 5-HT1 receptor subtypes and with respect to α2-AR (Adrenergic Receptors). METHODS Binding affinities were determined on cells expressing human cloned receptors for 5-HT1A/B/D and α2A/B/C subtypes. The Ki values were determined for those with at least 50% radioligand inhibition. RESULTS All our derivatives show a moderate affinity for α2 subtypes, spanning from 5 to 7.5 pKi values. Moreover, they show affinity values in a μM-nM range at the 5-HT1A receptor, while they are practically inactive at 5-HT1B and 5-HT1D subtypes. Compound 11, the best of the series, has a 5-HT1A pKi value of 8.43 similar to spiroxatrine but, notably, it has a 5-HT1A favorable selectivity ratio of 52, 8 and 29, respectively over α2A, α2B and α2C adrenoceptor subtypes. CONCLUSIONS In this SAR study, a 5-HT1A selective ligand has been identified in which a tetralone moiety replaced the 1,4-benzodioxane of spiroxatrine and the methylene linker to the triazaspirodecanone portion was maintained in position 2.
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Affiliation(s)
- Claudia Sorbi
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Giuseppe Campi 103, 41125, Modena, Italy
| | - Annalisa Tait
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Giuseppe Campi 103, 41125, Modena, Italy
| | - Umberto M Battisti
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Giuseppe Campi 103, 41125, Modena, Italy.,Department of Drug Design and Pharmacology, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Livio Brasili
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Giuseppe Campi 103, 41125, Modena, Italy.
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1,3-Dioxane as a scaffold for potent and selective 5-HT 1AR agonist with in-vivo anxiolytic, anti-depressant and anti-nociceptive activity. Eur J Med Chem 2019; 176:310-325. [PMID: 31112892 DOI: 10.1016/j.ejmech.2019.05.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/27/2019] [Accepted: 05/06/2019] [Indexed: 12/19/2022]
Abstract
A series of compounds generated by ring expansion/opening and molecular elongation/simplification of the 1,3-dioxolane scaffold were prepared and tested for binding affinity at 5-HT1AR and α1 adrenoceptors. The compounds with greater affinity were selected for further functional studies. N-((2,2-diphenyl-1,3-dioxan-5-yl)methyl)-2-(2-methoxyphenoxy)ethan-1-ammonium hydrogen oxalate (12) emerged as highly potent full agonist at the 5-HT1AR (pKi 5-HT1A = 8.8; pD2 = 9.22, %Emax = 92). The pharmacokinetic data in rats showed that the orally administered 12 has a high biodistribution in the brain compartment. Thus, 12 was further investigated in-vivo, showing an anxiolytic and antidepressant effect. Moreover, in the formalin test, 12 was able to decrease the late response to the noxious stimulus, indicating a potential use in the treatment of chronic pain.
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Guariento S, Franchini S, Tonelli M, Fossa P, Sorbi C, Cichero E, Brasili L. Exhaustive CoMFA and CoMSIA analyses around different chemical entities: a ligand-based study exploring the affinity and selectivity profiles of 5-HT 1A ligands. J Enzyme Inhib Med Chem 2017; 32:214-230. [PMID: 28114832 PMCID: PMC6009877 DOI: 10.1080/14756366.2016.1247057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The 5-hydroxytryptamine (5-HT1A) receptors represent an attractive target in drug discovery. In particular, 5-HT1A agonists and partial agonists are deeply investigated for their potential role in the treatment of anxiety, depression, ischaemic brain disorder and more recently, of pain. On the other hand, 5-HT1A antagonists have been revealed promising compounds in cognition disorders and, lately, in cancer. Thus, the discovery of 5HT1A ligands is nowadays an appealing research activity in medicinal chemistry. In this work, Comparative Molecular Fields Analysis (CoMFA) and Comparative Molecular Similarity Index Analysis (CoMSIA) were applied on an in-house library of 5-HT1A ligands bearing different chemical scaffolds in order to elucidate their affinity and selectivity for the target. Following this procedure, a number of structural modifications have been drawn for the development of much more effective 5-HT1AR ligands.
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Affiliation(s)
- Sara Guariento
- a Department of Pharmacy , University of Genoa , Genoa , Italy
| | - Silvia Franchini
- b Department of Life Sciences , University of Modena and Reggio Emilia , Modena , Italy
| | - Michele Tonelli
- a Department of Pharmacy , University of Genoa , Genoa , Italy
| | - Paola Fossa
- a Department of Pharmacy , University of Genoa , Genoa , Italy
| | - Claudia Sorbi
- b Department of Life Sciences , University of Modena and Reggio Emilia , Modena , Italy
| | - Elena Cichero
- a Department of Pharmacy , University of Genoa , Genoa , Italy
| | - Livio Brasili
- b Department of Life Sciences , University of Modena and Reggio Emilia , Modena , Italy
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Cichero E, Espinoza S, Tonelli M, Franchini S, Gerasimov AS, Sorbi C, Gainetdinov RR, Brasili L, Fossa P. A homology modelling-driven study leading to the discovery of the first mouse trace amine-associated receptor 5 (TAAR5) antagonists. MEDCHEMCOMM 2016. [DOI: 10.1039/c5md00490j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The computational study here proposed allowed us to discovery for the first time two TAAR5 antagonist, selective over the TAAR1 receptor.
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Affiliation(s)
- Elena Cichero
- Department of Pharmacy
- University of Genoa
- 3, 16132 Genoa
- Italy
| | - Stefano Espinoza
- Department of Neuroscience and Brain Technologies
- Istituto Italiano di Tecnologia
- Genoa
- Italy
| | - Michele Tonelli
- Department of Pharmacy
- University of Genoa
- 3, 16132 Genoa
- Italy
| | - Silvia Franchini
- Department of Life Sciences
- University of Modena and Reggio Emilia
- 41125 Modena
- Italy
| | | | - Claudia Sorbi
- Department of Life Sciences
- University of Modena and Reggio Emilia
- 41125 Modena
- Italy
| | - Raul R. Gainetdinov
- Department of Neuroscience and Brain Technologies
- Istituto Italiano di Tecnologia
- Genoa
- Italy
- Institute of Translational Biomedicine
| | - Livio Brasili
- Department of Life Sciences
- University of Modena and Reggio Emilia
- 41125 Modena
- Italy
| | - Paola Fossa
- Department of Pharmacy
- University of Genoa
- 3, 16132 Genoa
- Italy
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5
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Franchini S, Baraldi A, Sorbi C, Pellati F, Cichero E, Battisti UM, Angeli P, Cilia A, Brasili L. Enantiomeric resolution of [(2,2-diphenyl-1,3-dioxolan-4-yl)methyl](2-phenoxyethyl)amine, a potent α 1and 5-HT 1Areceptor ligand: an in vitro and computational study. MEDCHEMCOMM 2015. [DOI: 10.1039/c4md00484a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioseparation and stereoselective synthesis of (1), a potent 5-HT1AR ligand, were performed. Surprisingly, the enantiomers proved to be equipotent.
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Affiliation(s)
- Silvia Franchini
- Dipartimento di Scienze della Vita
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena, Italy
| | - Annamaria Baraldi
- Dipartimento di Scienze della Vita
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena, Italy
| | - Claudia Sorbi
- Dipartimento di Scienze della Vita
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena, Italy
| | - Federica Pellati
- Dipartimento di Scienze della Vita
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena, Italy
| | - Elena Cichero
- Dipartimento di Farmacia
- Università degli Studi di Genova
- 16132 Genova, Italy
| | - Umberto M. Battisti
- Dipartimento di Scienze della Vita
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena, Italy
| | - Piero Angeli
- Dipartimento di Scienze Chimiche
- Università degli Studi di Camerino
- 62032 Camerino, Italy
| | - Antonio Cilia
- Divisione Ricerca e Sviluppo
- Recordati S.p.A
- 20148 Milano, Italy
| | - Livio Brasili
- Dipartimento di Scienze della Vita
- Università degli Studi di Modena e Reggio Emilia
- 41125 Modena, Italy
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Romeo G, Salerno L, Pittalà V, Modica MN, Siracusa MA, Materia L, Buccioni M, Marucci G, Minneman KP. High affinity ligands and potent antagonists for the α1D-adrenergic receptor. Novel 3,8-disubstituted [1]benzothieno[3,2-d]pyrimidine derivatives. Eur J Med Chem 2014; 83:419-32. [DOI: 10.1016/j.ejmech.2014.06.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/13/2014] [Accepted: 06/25/2014] [Indexed: 10/25/2022]
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Cichero E, Espinoza S, Franchini S, Guariento S, Brasili L, Gainetdinov RR, Fossa P. Further Insights Into the Pharmacology of the Human Trace Amine-Associated Receptors: Discovery of Novel Ligands for TAAR1 by a Virtual Screening Approach. Chem Biol Drug Des 2014; 84:712-20. [DOI: 10.1111/cbdd.12367] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 05/08/2014] [Accepted: 05/12/2014] [Indexed: 12/01/2022]
Affiliation(s)
- Elena Cichero
- Dipartimento di Farmacia; Università degli Studi di Genova; Viale Benedetto XV n. 3 Genova 16132 Italy
| | - Stefano Espinoza
- Department of Neuroscience and Brain Technologies; Istituto Italiano di Tecnologia; Via Morego 30, Genova 16163 Italy
| | - Silvia Franchini
- Dipartimento di Scienze della Vita; Università degli Studi di Modena e Reggio Emilia; Via Campi 183 Modena 41100 Italy
| | - Sara Guariento
- Dipartimento di Farmacia; Università degli Studi di Genova; Viale Benedetto XV n. 3 Genova 16132 Italy
| | - Livio Brasili
- Dipartimento di Scienze della Vita; Università degli Studi di Modena e Reggio Emilia; Via Campi 183 Modena 41100 Italy
| | - Raul R. Gainetdinov
- Department of Neuroscience and Brain Technologies; Istituto Italiano di Tecnologia; Via Morego 30, Genova 16163 Italy
- Skolkovo Institute of Science and Technology; Skolkovo Moscow Region 143025 Russia
- Faculty of Biology and Soil Science; St. Petersburg State University; St. Petersburg 199034 Russia
| | - Paola Fossa
- Dipartimento di Farmacia; Università degli Studi di Genova; Viale Benedetto XV n. 3 Genova 16132 Italy
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Classification of 5-HT(1A) receptor agonists and antagonists using GA-SVM method. Acta Pharmacol Sin 2011; 32:1424-30. [PMID: 21963891 DOI: 10.1038/aps.2011.112] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
AIM To construct a reliable computational model for the classification of agonists and antagonists of 5-HT(1A) receptor. METHODS Support vector machine (SVM), a well-known machine learning method, was employed to build a prediction model, and genetic algorithm (GA) was used to select the most relevant descriptors and to optimize two important parameters, C and r of the SVM model. The overall dataset used in this study comprised 284 ligands of the 5-HT(1A) receptor with diverse structures reported in the literatures. RESULTS A SVM model was successfully developed that could be used to predict the probability of a ligand being an agonist or antagonist of the 5-HT(1A) receptor. The predictive accuracy for training and test sets was 0.942 and 0.865, respectively. For compounds with probability estimate higher than 0.7, the predictive accuracy of the model for training and test sets was 0.954 and 0.927, respectively. To further validate our model, the receiver operating characteristic (ROC) curve was plotted, and the Area-Under-the-ROC- Curve (AUC) value was calculated to be 0.883 for training set and 0.906 for test set. CONCLUSION A reliable SVM model was successfully developed that could effectively distinguish agonists and antagonists among the ligands of the 5-HT(1A) receptor. To our knowledge, this is the first effort for the classification of 5-HT(1A) receptor agonists and antagonists based on a diverse dataset. This method may be used to classify the ligands of other members of the GPCR family.
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Comparative Molecular Field Analysis (CoMFA) and Comparative Molecular Similarity Indices Analysis (CoMSIA) studies on α(1A)-adrenergic receptor antagonists based on pharmacophore molecular alignment. Int J Mol Sci 2011; 12:7022-37. [PMID: 22072933 PMCID: PMC3211024 DOI: 10.3390/ijms12107022] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 09/05/2011] [Accepted: 10/11/2011] [Indexed: 11/16/2022] Open
Abstract
The α1A-adrenergic receptor (α1A-AR) antagonist is useful in treating benign prostatic hyperplasia, lower urinary tract symptoms, and cardiac arrhythmia. Three-dimensional quantitative structure-activity relationship (3D-QSAR) studies were performed on a set of α1A-AR antagonists of N-aryl and N-nitrogen class. Statistically significant models constructed from comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) were established based on a training set of 32 ligands using pharmacophore-based molecular alignment. The leave-oneout cross-validation correlation coefficients were q2CoMFA = 0.840 and q2CoMSIA = 0.840. The high correlation between the cross-validated/predicted and experimental activities of a test set of 12 ligands revealed that the CoMFA and CoMSIA models were robust (r2pred/CoMFA = 0.694; r2pred/CoMSIA = 0.671). The generated models suggested that electrostatic, hydrophobic, and hydrogen bonding interactions play important roles between ligands and receptors in the active site. Our study serves as a guide for further experimental investigations on the synthesis of new compounds. Structural modifications based on the present 3D-QSAR results may lead to the discovery of other α1A-AR antagonists.
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Gupta AK, Saxena AK. 3D-QSAR CoMFA and CoMSIA studies on a set of diverse α1a-adrenergic receptor antagonists. Med Chem Res 2010. [DOI: 10.1007/s00044-010-9379-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Discovery of a new series of 5-HT1A receptor agonists. Bioorg Med Chem Lett 2010; 20:2017-20. [DOI: 10.1016/j.bmcl.2010.01.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2009] [Revised: 01/14/2010] [Accepted: 01/14/2010] [Indexed: 11/23/2022]
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